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Temporal scale of habitat selection for large carnivores: Balancing energetics, risk and finding prey

1. When navigating heterogeneous landscapes, large carnivores must balance trade‐offs between multiple goals, including minimizing energetic expenditure, maintaining access to hunting opportunities and avoiding potential risk from humans. The relative importance of these goals in driving carnivore m...

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Autores principales: Nisi, Anna C., Suraci, Justin P., Ranc, Nathan, Frank, Laurence G., Oriol‐Cotterill, Alayne, Ekwanga, Steven, Williams, Terrie M., Wilmers, Christopher C.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9298125/
https://www.ncbi.nlm.nih.gov/pubmed/34668571
http://dx.doi.org/10.1111/1365-2656.13613
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author Nisi, Anna C.
Suraci, Justin P.
Ranc, Nathan
Frank, Laurence G.
Oriol‐Cotterill, Alayne
Ekwanga, Steven
Williams, Terrie M.
Wilmers, Christopher C.
author_facet Nisi, Anna C.
Suraci, Justin P.
Ranc, Nathan
Frank, Laurence G.
Oriol‐Cotterill, Alayne
Ekwanga, Steven
Williams, Terrie M.
Wilmers, Christopher C.
author_sort Nisi, Anna C.
collection PubMed
description 1. When navigating heterogeneous landscapes, large carnivores must balance trade‐offs between multiple goals, including minimizing energetic expenditure, maintaining access to hunting opportunities and avoiding potential risk from humans. The relative importance of these goals in driving carnivore movement likely changes across temporal scales, but our understanding of these dynamics remains limited. 2. Here we quantified how drivers of movement and habitat selection changed with temporal grain for two large carnivore species living in human‐dominated landscapes, providing insights into commonalities in carnivore movement strategies across regions. 3. We used high‐resolution GPS collar data and integrated step selection analyses to model movement and habitat selection for African lions Panthera leo in Laikipia, Kenya and pumas Puma concolor in the Santa Cruz Mountains of California across eight temporal grains, ranging from 5 min to 12 hr. Analyses considered landscape covariates that are related to energetics, resource acquisition and anthropogenic risk. 4. For both species, topographic slope, which strongly influences energetic expenditure, drove habitat selection and movement patterns over fine temporal grains but was less important at longer temporal grains. In contrast, avoiding anthropogenic risk during the day, when risk was highest, was consistently important across grains, but the degree to which carnivores relaxed this avoidance at night was strongest for longer term movements. Lions and pumas modified their movement behaviour differently in response to anthropogenic features: lions sped up while near humans at fine temporal grains, while pumas slowed down in more developed areas at coarse temporal grains. Finally, pumas experienced a trade‐off between energetically efficient movement and avoiding anthropogenic risk. 5. Temporal grain is an important methodological consideration in habitat selection analyses, as drivers of both movement and habitat selection changed across temporal grain. Additionally, grain‐dependent patterns can reflect meaningful behavioural processes, including how fitness‐relevant goals influence behaviour over different periods of time. In applying multi‐scale analysis to fine‐resolution data, we showed that two large carnivore species in very different human‐dominated landscapes balanced competing energetic and safety demands in largely similar ways. These commonalities suggest general strategies of landscape use across large carnivore species.
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spelling pubmed-92981252022-07-21 Temporal scale of habitat selection for large carnivores: Balancing energetics, risk and finding prey Nisi, Anna C. Suraci, Justin P. Ranc, Nathan Frank, Laurence G. Oriol‐Cotterill, Alayne Ekwanga, Steven Williams, Terrie M. Wilmers, Christopher C. J Anim Ecol Research Articles 1. When navigating heterogeneous landscapes, large carnivores must balance trade‐offs between multiple goals, including minimizing energetic expenditure, maintaining access to hunting opportunities and avoiding potential risk from humans. The relative importance of these goals in driving carnivore movement likely changes across temporal scales, but our understanding of these dynamics remains limited. 2. Here we quantified how drivers of movement and habitat selection changed with temporal grain for two large carnivore species living in human‐dominated landscapes, providing insights into commonalities in carnivore movement strategies across regions. 3. We used high‐resolution GPS collar data and integrated step selection analyses to model movement and habitat selection for African lions Panthera leo in Laikipia, Kenya and pumas Puma concolor in the Santa Cruz Mountains of California across eight temporal grains, ranging from 5 min to 12 hr. Analyses considered landscape covariates that are related to energetics, resource acquisition and anthropogenic risk. 4. For both species, topographic slope, which strongly influences energetic expenditure, drove habitat selection and movement patterns over fine temporal grains but was less important at longer temporal grains. In contrast, avoiding anthropogenic risk during the day, when risk was highest, was consistently important across grains, but the degree to which carnivores relaxed this avoidance at night was strongest for longer term movements. Lions and pumas modified their movement behaviour differently in response to anthropogenic features: lions sped up while near humans at fine temporal grains, while pumas slowed down in more developed areas at coarse temporal grains. Finally, pumas experienced a trade‐off between energetically efficient movement and avoiding anthropogenic risk. 5. Temporal grain is an important methodological consideration in habitat selection analyses, as drivers of both movement and habitat selection changed across temporal grain. Additionally, grain‐dependent patterns can reflect meaningful behavioural processes, including how fitness‐relevant goals influence behaviour over different periods of time. In applying multi‐scale analysis to fine‐resolution data, we showed that two large carnivore species in very different human‐dominated landscapes balanced competing energetic and safety demands in largely similar ways. These commonalities suggest general strategies of landscape use across large carnivore species. John Wiley and Sons Inc. 2021-10-29 2022-01 /pmc/articles/PMC9298125/ /pubmed/34668571 http://dx.doi.org/10.1111/1365-2656.13613 Text en © 2021 The Authors. Journal of Animal Ecology published by John Wiley & Sons Ltd on behalf of British Ecological Society https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Articles
Nisi, Anna C.
Suraci, Justin P.
Ranc, Nathan
Frank, Laurence G.
Oriol‐Cotterill, Alayne
Ekwanga, Steven
Williams, Terrie M.
Wilmers, Christopher C.
Temporal scale of habitat selection for large carnivores: Balancing energetics, risk and finding prey
title Temporal scale of habitat selection for large carnivores: Balancing energetics, risk and finding prey
title_full Temporal scale of habitat selection for large carnivores: Balancing energetics, risk and finding prey
title_fullStr Temporal scale of habitat selection for large carnivores: Balancing energetics, risk and finding prey
title_full_unstemmed Temporal scale of habitat selection for large carnivores: Balancing energetics, risk and finding prey
title_short Temporal scale of habitat selection for large carnivores: Balancing energetics, risk and finding prey
title_sort temporal scale of habitat selection for large carnivores: balancing energetics, risk and finding prey
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9298125/
https://www.ncbi.nlm.nih.gov/pubmed/34668571
http://dx.doi.org/10.1111/1365-2656.13613
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